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Very slow rotation (1rotation/hr) electric motor?

I am looking to build an electronically controlled time lapse pan device for my camera. I want to be able to rotate the camera for a specifically timed time lapse (e.g 90 degrees every 20 minutes of shooting). My problem is finding an electric motor that is slow enough RPM to create this slow of a motion... Right now I would need a motor capable of going down to about 1 rotation in 6 hours... at the very least 1 rotation/hr.

So, do those motors even exist? Right now I am thinking the best solution would be to have a stepper motor, connected to a gearbox (right now that would be the inside of a kitchen timer, somehow), that would allow a very slow rotation of 1 axis. However, as this is a mobile build, power constraints are really an issue. I would like to be able to shoot for 6 hours max continually, and I dont know if that could be done without a very low power motor....

If I did the stepper motor connected to a gearbox, do you think that would affect the linearity of the time lapses? E.g would the stepping motion of the motor create a choppy vid?

I have looked into the kitchen timer timelapse but have yet to find a timer that can hold up my relatively light Panasonic FZ-100 without locking up...

How many steps will the motor take per rev ? In single step mode, probably 200. Add a belt reduction to increase the torque, say 2:1, and now one rev is 400 steps. HALF step the motor, and you have EIGHT hundred steps per rev, you really aren't going to see that.

Well, lets say you take a step, then take 8 photos, then another step and 8 photos.

8 photos at 24fps = 1/3 of a second. So you would have 1/3 of a second of the same placed images. Then after that it would change. If you have more steps you could take more photos without creating a visual disturbance.

i dont know if this will help, but you know those timers that plug into a wall socket and you push the pins down on the wheel to make your appliances go off and on? they turn once every 24 hours but you maybe able to pull out some of the gears to make it go faster.

Is there a reason you need a stepper motor(precision incremental turning) ? Stepper motors only have so many positions (~200 steps for the ones I've worked with), so I'd guess you are going to have to either use gears to slow it down or belt driven wheels.

And as long as you are having to slow it down, I would guess that a small normal motor would give you plenty of torque for what you need. Just use good bearings so your wheels spin freely. This would simplify your control and power requirements greatly.

I guess just to have a reliable way of measuring the speed and eventual total rotation of the axis of the camera, e.g Ive taken 1100 steps, and that creates one rotation. I suppose just a plain linear motor would be fine, but it would be more mathematical and time based...

I am planning to slow it down either through a gearbox or the internals of a kitchen timer (seems to have a pretty good down ratio)...